【正文】 IV 目錄 摘要 s munication is based on optical fiber telemunications, microwave and satellite munications supplemented this reason, the development of optical munication is being more and more important. As international Inter and other information technologies widely used, And because of the rapid economic development, for the munications needs of more intense, require fiber munication toward largecapacity, highspeed, the rapid development of longrange direction. The development of optical work cable also makes the new structure will continue to emerge. The new generation of alloptical cable work requirements for wider bandwidth to acmodate more wavelengths and higher transmission rate, ease of installation and maintenance, such as longer life type of cable is also tending to diversify ,for some special environment more special cable to meet special requirements. Along with the central government to increase rural economic support and investment, the Guizhou Qianxinan’s economic have got rapid development, The wealth of the majority of farmers was rapidly increased, people in life, business, work on the Mobile Communication growing demand for quality munications are increasingly high requirements。系統(tǒng)的調(diào)試開(kāi)通與驗(yàn)收，后期的維護(hù)都是光纜工程必不可少的工作。 光纜線路工程設(shè)計(jì)的研究表明，在同一地區(qū)的不同地段，對(duì)于光纖和路由的選取、敷設(shè)都是不同的，根據(jù)具體的現(xiàn)場(chǎng)情況和經(jīng)濟(jì)、建設(shè)要求做出正確的、合理的選擇，是保證光纖通信系統(tǒng)長(zhǎng)期、穩(wěn)定、安全工作的前提。 由此光纜的種類也趨于多樣化，對(duì)一些特殊環(huán)境更有特種光纜來(lái)滿足特殊的要求。 隨著國(guó)際互連網(wǎng)等信息技術(shù)的普及應(yīng)用，加之由于經(jīng)濟(jì)的快速發(fā)展，人們對(duì)通信的需求更加強(qiáng)烈，這要求光纖通信向著大容量，高速率，遠(yuǎn)距離方向迅猛發(fā)展。重慶郵電大學(xué)計(jì)算機(jī)科學(xué)與技術(shù)學(xué)院本科畢業(yè)設(shè)計(jì)（論文） I 摘要 當(dāng)今的通信方式是以光纖通信為主，微波 、 衛(wèi)星通信為輔的格局。也正因如此，光纖通信的發(fā)展顯得越發(fā)重要。 光網(wǎng)絡(luò)的發(fā)展 又 使得光纜的新結(jié)構(gòu)不斷涌現(xiàn) ， 新一代的全光網(wǎng)絡(luò)要求光纜提供更寬的帶寬、容納更多的波長(zhǎng)、傳送更高的速率、便于安裝維護(hù)、使用壽命更長(zhǎng)等。 隨著中央政府加大對(duì)農(nóng)村經(jīng)濟(jì)的扶持和投資，貴州 黔西南州的經(jīng)濟(jì)得到快速發(fā)展，廣大農(nóng)民的富裕度得到迅速的提高，人們?cè)谏睢⑸藤Q(mào)、工作中對(duì)移動(dòng)通信的需求越來(lái)越大，對(duì)通信質(zhì)量要求也越來(lái)越高；因此貴州通信服務(wù)公司本著回報(bào)社會(huì)的態(tài)度，決定加大對(duì)農(nóng)村的投入，擴(kuò)大信號(hào)覆蓋面，為百姓的經(jīng)濟(jì)發(fā)展服務(wù)，于是提出了安龍等村通二期工程。對(duì)于光纜的敷設(shè)也有各種具體的要求，同樣保證光纖通信的 正常工作。 【 關(guān)鍵詞 】 ： 光纜線路，光纖，工程設(shè)計(jì)，概、預(yù)算 重慶郵電大學(xué)計(jì)算機(jī)科學(xué)與技術(shù)學(xué)院本科畢業(yè)設(shè)計(jì)（論文） II ABSTRACT Today39。 Therefore Guizhou munications services pany in return society39。 II 緒論 1 1 光纖通信概論 5 2． 1 光纖的傳輸特性 ............................................................................................ 5 2． 衰減 .................................................................................................... 5 2． 色散 .................................................................................................... 5 2． 偏振模色散 ........................................................................................ 6 2． 光纖的非線性效應(yīng) ............................................................................ 6 2． 2 光纖類型 ........................................................................................................ 6 2． 3 光纖的基本參數(shù) ............................................................................................ 7 2． 4 光纖傳輸參數(shù)的測(cè)量 .................................................................................... 8 2． 4． 1 光纖衰減特性的測(cè)量 ...................................................................... 8 2． 4． 2 光纖的基帶響應(yīng)與帶寬 .................................................................. 9 2． 4． 3 單模光纖的色散及測(cè)量 ................................................................ 10 2． 4． 4 偏振模色散測(cè)量 ............................................................................ 11 3 光纜 13 3． 1 光纜特點(diǎn) ...................................................................................................... 13 3． 2 光纜分類 ...................................................................................................... 13 3． 3 光纜技術(shù)的發(fā)展特點(diǎn) .................................................................................. 13 4 光纖通信系統(tǒng) 21 5． 1 光纜線路設(shè)計(jì)的原則和內(nèi)容 ...................................................................... 21 光纜線路路由選擇原理 .................................................................... 21 光纜線路敷設(shè)方式選擇原理 ............................................................ 22 5． 1． 3 光纜選型 ........................................................................................ 22 5． 1． 4 傳輸設(shè)計(jì) ........................................................................................ 23 5． 1． 5 纜線路的防護(hù)設(shè)計(jì)原理 ................................................................ 25 5． 2 光纜通信項(xiàng)目介紹 ...................................................................................... 28 5． 2． 1 工程概況 ........................................................................................ 28 5． 2． 2 設(shè)計(jì)依據(jù) ........................................................................................ 28 5． 2． 3 設(shè)計(jì)范圍 ........................................................................................ 28 5． 2． 4 設(shè)計(jì)思路 ........................................................................................ 29 5． 2． 5 設(shè)計(jì)內(nèi)容及分工 ............................................................................ 29 5． 2． 6 主要工程量 .................................................................................... 30 5． 2． 7 工程投資與技術(shù)經(jīng)濟(jì)指標(biāo) ............................................................ 30 5． 2． 8 光纜線路路由選定 ........................................................................ 30 5． 3 需求分析 ...................................................................................................... 33 5． 3． 1 光纜及光纜接頭盒主要技術(shù)性能要求 ........................................ 33 5． 3． 2 鋼筋混凝土電桿性能要求 ............................................................ 36 5． 3． 3 各種鐵件 ........................................................................................ 36 5． 3． 4 桿路建筑 ........................................................................................ 37 5． 3． 5 光纜中繼段計(jì)算 ...................................................